While I fully agree with your issues, and have experienced them too, (although comparing v8 on Linux to v7 on Mac – I don't use 1Password on Windows), those are just UI/integration issues. I don't think they're because of electron, but rather because the remake of the UI is poor.
FWIW, my main gripe is having to unlock each vault separately, as opposed to a single unlock as used to be the case on Mac / iPhone.